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UFMRM Webinar Series 011

UFMRM Working Group

Tuesday, 24 April 2018 from 12:30 to 13:00 (BST)

UFMRM Webinar Series 011

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RSVP 24 Apr 2018 Free  

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Dr Luke Smith at Newcastle University, UK, will talk about Practical applications of supercomputing in flood simulation.

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Increased availability and ubiquity of data for use in flood models is an opportunity for improved accuracy in flood modelling, but computational power has long limited models based on the shallow water equations (SWEs).
Novel computational methods are required to perform flood simulation with graphics processing units (GPUs) and multi-core processors, significantly reducing runtime. Further improvements are made by domain decomposition, with an approach allowing numerous computer systems with multiple GPU processing devices to work together for a single simulation. Simulation accuracy is not inhibited by these methods, but there are limits to the performance achievable.

These methods are applied to flooding which is fluvial in Carlisle, pluvial in Newcastle upon Tyne, defence failure in Thamesmead, and dam failure in Malpasset. Sensitivity of model results to spatial resolution, and parameterisations, varies significantly at high resolutions, with important implications for risk analysis. No discernible improvement in results was found by refinement beyond 2m, with implications for future survey methods.


Luke Smith is a Senior Research Software Engineer at Newcastle University. He holds a master’s degree in civil engineering; a decade of software experience leading projects for organisations including RBS, British Airways and IKEA; and recently completed a PhD in flood simulation with high-performance computing. He now leads the software team at the Urban Observatory, the UK’s largest open environmental sensing network, which monitors air quality, flooding, and transport systems. Luke also campaigns for open data, open methodologies, and increased transparency in government-commissioned modelling.

Do you have questions about UFMRM Webinar Series 011? Contact UFMRM Working Group

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When & Where
Harrison Building
North Park Road
EX4 4QF Exeter
United Kingdom

Tuesday, 24 April 2018 from 12:30 to 13:00 (BST)

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